JPH10262402A - Remaining tillage processor of rotary tilling tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dissolve a problem that tillage mud is left in a tilled place and also caught in a remaining tillage processing paw fitting frame part so as to prevent mud from being crushed by tilling paws even at the time of tilling un-tilled mud at the external side of the tilling paws in a rotary tilling device by a remaining tillage processing paw. SOLUTION: In a rotary tilling tool 5, the upper part of a tilling pipe 2 where the plural tilling paws 1 is covered by a main cover 3, a side part is covered by a side cover 4, a sub-side cover 6 which is extended and projected downwards is fitted in the rear lower part of the side cover 4 and the remaining tillage processing paw 7 is provided in the front lower part of the side cover 4. In this case, an excavating blade 8 provided in the front edge of the remaining tillage processing paw 7 is positioned at the outside of the sub-side cover 6 in a width direction, the lower end of the excavating blade 8 is extended while being moved backwards till the neighborhood of the rotary locus of the tilling paws 1 and, moreover, a mud guide surface 9 projected from the rear edge of the remaining processing paw 7 is made to face the inner side of the sub-side cover 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a residual tillage treatment device for a rotary tiller. The present invention is a residual tillage treatment device provided on the outer side of a tilling claw that performs rotary excavation with a constant tilling width, and guides the outer untilled mud to the rotating tilling claw side to crush the soil into a predetermined size. While trying to run.

[0002]

2. Description of the Related Art There are conventional residual tillage treatment apparatuses disclosed in Japanese Utility Model Laid-Open Nos. 48-100707 and 51-127402.
These residual tillage treatment blades are simply attached to one side with a plow or plow-like excavation blade that guides the uncultivated land outside the tillage claw to the tillage claw side. The excavated mud is only lifted up and guided to the upper mounting frame, and cannot be guided to the tilling claw side. Even if it is guided, the rear side of the tilling claw is not covered with a cover. And had disadvantages such as poor crushability.

[0003]

SUMMARY OF THE INVENTION The present invention is to solve such a problem of the conventional device, and has taken the following technical means. That is, a plurality of tillage claws 1
1. . . The upper part of the tilling pipe 2 with the main cover 3
A side cover 4 covers the sides, and a sub-side cover 6 extending downward is attached to a lower rear portion of the side cover 4, and a residual tillage treatment claw 7 is provided at a lower front portion of the side cover 4. A rotary tilling tool 5, wherein a digging blade 8 provided at a front edge of the residual cultivation processing claw 7 is positioned outside the sub side cover 6 in a width direction, and a lower end of the digging blade 8 is rotated by the rotation locus of the tilling claw 1. A residual tilling treatment device for a rotary tilling tool, wherein the mud guiding surface 9 protruding from the trailing edge of the residual cultivation processing claw 7 is directed toward the inner side of the sub-side cover 6. Configuration.

[0004]

1 shows a residual tillage treatment device attached to one side of a rotary till 5. The front, rear, left and right directions in the description are directions with respect to the traveling direction “A” of the rotary tiller 5. The rotary tiller 5 is attached to an elevating link such as a three-point link 11 for mounting a working machine disposed on the front and rear of the body 10 of the agricultural tractor, and is raised and lowered by an operation of the agricultural tractor driver or an automatic control operation. I do. Then, the driving force of the PTO shaft 12, which is an external power take-out device of the agricultural tractor, is input to the input shaft 14 via the universal joint 13, and the driving force is transmitted to the tilling pipe 2 via the transmission case 15.

A case in which the transmission case 15 is located at the center in the left-right direction of the rotary tilling tool 5 is called a center drive cultivator, and a case in which the transmission case 15 is located on one side in the left-right direction of the rotary tilling tool 5. Is referred to as a side drive cultivator, and the one shown in the figure is a side drive cultivator in which a transmission case 15 is disposed on the left side. The tilling pipe 2 is supported between the left transmission case 15 and the right support plate 16 via bearings or the like, and a plurality of claw holders 17, 1 attached radially to the tilling pipe 2.
7. . . . Tilling claws 1,1. . . . Is attached to be removable. The rotation of the tilling pipe 2 causes the tilling claws 1, 1. . When the is rotated in the direction of arrow "B", the field surface mud "A" is excavated and becomes excavated mud "B" scattered backward.

[0006] The tilling pipe 2 and the tilling claws 1,1. . Above the main cover 3 having a certain length in the front-rear direction is mounted between the transmission case 15 and the support plate 16. A front edge of an elastic plate 18 made of a rubber plate or a soft resin material having substantially the same width as the main cover 3 is attached to a rear edge of the main cover 3. The front edge of the cover 19 is attached.

On the upper surface of the rear cover 19, rear ends of the bifurcated support arms 21 and 21 having a center swinging portion 20 protruding forward in the center in the width direction are provided integrally. At the left and right ends of the rear cover 19, holding frames 22, 22 also serving as reinforcement are provided.
The two and the main cover 3 are connected while being swingably regulated by spring plates 23,23. Thereby, the rear cover 1
Reference numeral 9 is attached to the main cover 3 so as to be able to swing up and down, left and right, and back and forth. In order to further restrict this swing, the support frames 2 are respectively set from the right and left rear edges of the main cover 3.
Push-pull rods 2 are provided between the projecting ends and mounting frames 21a attached to the upper surface of the rear cover 19 at the rear end of the support arms 21, 21.
5, 25 are mounted on the shaft.

The lower end of the push-pull rod 25 is a pin 26
The upper portion of the push-pull rod 25 is configured to be freely slidable in the axial direction in the hole of the top 27 in the support frame 24 or to be lockable by pushing in the lock pin 28. The push-pull rod 25 is provided with lock holes at a plurality of positions (not shown).
The vertical movement of the rear cover 19 with respect to the main cover 3 is restricted. Reference numerals 29, 29 denote lock rings for adjusting the pressing force of the upper and lower coil springs 30, 31 attached to the push-pull rod 25. When the lock pin 28 is in the free state, the lock ring 29 As the distance between the coil springs 30 and 31 increases, the pressure applied to the coil springs 30 and 31 can be increased. As the upper coil spring 30 is strengthened, the side view posture of the rear cover 19 is lifted. Become.

At the rear of the rear cover 19, as shown in the perspective view of FIG. 4, an isosceles triangular center cover lid 41 is provided at the center in the left-right direction, and a substantially trapezoidal corner cover lid 4 is provided at both left and right ends.
2, 42 are detachably attached. For example, a case where the center cover lid 41 is removed will be described. In order to face the opening of the lid removed, the tip of the double earth plate for ridges, which is a separate working machine attached to the center in the left-right direction, is faced. If the tip of the double earth plate for ridges, which is a separate working machine, can be attached to the rotary tilling tool 5 in this way, the working device length in the combined mode can be shortened, and the combined working device projects rearward from the machine body. The amount of overhang can be reduced, and turning and running can be easily performed. Also, by removing this lid portion, even if the tip of the double slab for the center ridge is positioned below the rear cover 19, the vertical swing of the rear cover 19 is not hindered. A large leveling plate for leveling is not required.

The periphery of the rear cover 19 will be described mainly with reference to the overall perspective view of FIG. 4. A leveler 43 is mounted behind the rear cover 19 so as to be swingable up and down around the rear edge of the rear cover 19. I have. The leveler 43 of this example presses the mud surface with its own weight, and a bar-shaped tooth 44, 44. . . . The grass and straw moving along the lower edge of the tooth 44 to the excavated mud B side are pushed into the tilling mud by the own weight of the leveling leveler 43 and the elastic force of the tooth 44. I have.

FIG. 9 shows an alternative leveling leveler 4.
3a, the push-pull rod 25a for controlling the movement of the rear cover 19 with respect to the main cover 3 to connect the rear cover 19 with the main cover 3 has the following configuration. That is, the intermediate portion in the vertical direction of the push-pull rod 25a is axially attached to the lower frame 45 integrally projecting rearward from the mounting frame 21a by the pin 26, and the lower frame 4
The lower end of the push-pull rod 25a projecting downward from 5 is pivotally attached 47 to the swing arm 46 of the leveler 43a. The swing arm 46 also serves as a reinforcing plate and serves as a front shaft 48.
The push-pull rod 2
5a, a plurality of adjusting holes 49, 49. . . Change the swing position by changing the mounting position. With such a configuration, the pressure can be increased by using the coil spring 31 used to press the rear cover 19 without increasing the weight of the leveler 43a. Further, when the rotary tiller 5 is lifted, the leveler 43a can be prevented from hanging down by the coil spring 30.

Next, a description will be given of a residual tillage treatment apparatus which is a main part of the present invention. In FIG. 3, in order to make the configuration easy to understand,
It is the left side view which removed the side cover 4 provided in the side of the tilling pipe 2. Normally, as shown in FIG. . The upper side of the tilling pipe 2 is covered with a side cover 4 that is disposed inside the transmission case 15 and includes a front side cover 4a and a rear side cover 4b.

FIG. 1 is a right side view and FIG.
The area around the side cover 4 on the 6 side will be described. The residual tillage treatment device is attached to the lower part of the support plate 16 side with a small thickness in the width direction with respect to the transmission case 15, so that the width of the residual tillage is reduced as much as possible. At the lower part of the support plate 16, a metal 32 having a bearing (not shown) therein is provided with bolts 33, 3.
3. A bracket 35 having a holder 34 at the front is attached using the bolt 33.

The holder 34 is located in front of the support plate 16, and the upper end of the residual tillage processing claw 7 is attached with a single attachment bolt 36. The front edge portion of the residual tillage processing claw 7 from the middle to the lower side has an “L” shape in a front view, and the “L” shape portion is an excavating blade 8 as a blade. Further, the excavating blade 8 has a curved surface that gradually escapes rearward in a side view, so that the excavating blade 8 can be stably pierced into the uncultivated mud during forward movement. The lower edge of the digging blade 8 is lowered to a position near the rotation locus of the tilling claw 1, and the digging depth is set to be substantially the same.

When the rear cultivation processing claw 7 is viewed from the rear with respect to the upper end of the holder 34, the portion of the excavating blade 8 below the middle portion in the vertical direction projects outward to cut uncultivated mud. The front and rear side covers 4a and 4b are substantially symmetrical with the left side cover 4, but the right rear side cover 4b is provided with a sub side cover 6 so as to be able to slide vertically downward. 37, 37 are mounting screws for mounting the sub side cover 6 so as to be freely slidable in the vertical direction along the elongated holes 38, 38 or to be fixable.

1 and 2, the trailing edge of the claw 7 shown in FIGS. 1 and 2 extends greatly from the front edge of the excavating blade 8 to the lower side of the support plate 16 when viewed from the side. The mud guide surface 9 is inclined inward toward the front edge side of the sub side cover 6 indicated by a virtual line of vision. When the rotary tilling tool 5 moves forward by the mud guide surface 9 and the mud on the uncultivated land side is scraped by the excavating blade 8, the excavated mud is easily guided to the inside of the sub-side cover 6, and the tilling claws 1, 1 . . It does not escape to the outside when it is finely crushed to a predetermined size.

FIGS. 5 and 6 show another embodiment of the claws of the residual tillage treatment device, which will be described below. Cultivation claw 7a shown in FIG.
Is to attach a rotating claw, which is eccentric to the side used for the normal rotary tillage tool 5, to the holder 34 of the bracket 35 to be used as a towing claw, and is used in common with the rotating claw. It is cheap. In this case, the curved bottom surface of the lower end of the claw serves as the mud guide surface 9a.

The remaining tillage processing claw 7b shown in FIG. 6 is of the strength-up type shown in FIG.
b is connected to the rear edge side with a reinforcing face plate 39 for reinforcement,
The excavated mud is guided toward the tilling claw 1 by using the reinforcing face plate 39 as a curved surface for mud guide. FIG. 7 is a plan view of the right side of the main part, and the claws 7a,
Although the description will be made assuming that the 7b is attached, a case where the single soil cultivator 40 is attached to the rear of the residual tillage treatment device and the vehicle travels near a ridge which is a partition from an adjacent field is described.

The single cultivation work of the ridge portion is to move the tilling mud while moving to the cultivating claw 1 side to form a small groove inside the ridge. Since it moves to the tilling claw 1 side to some extent, the mud applied to the single cultivator 40 is reduced, and the operation becomes easy. Also, a driver who is not accustomed to tilling work may damage the ridge, and hardly causes residual tillage even when working away.

[0020]

According to the present invention, a plurality of tilling claws 1 are provided.
1. . . The upper part of the tilling pipe 2 with the main cover 3
A side cover 4 covers the sides, and a sub-side cover 6 extending downward is attached to a lower rear portion of the side cover 4, and a residual tillage treatment claw 7 is provided at a lower front portion of the side cover 4. A rotary tilling tool 5, wherein a digging blade 8 provided at a front edge of the residual cultivation processing claw 7 is positioned outside the sub side cover 6 in a width direction, and a lower end of the digging blade 8 is rotated by the rotation locus of the tilling claw 1. A residual tilling treatment device for a rotary tilling tool, wherein the mud guiding surface 9 protruding from the trailing edge of the residual cultivation processing claw 7 is directed toward the inner side of the sub-side cover 6. Therefore, the rotary tilling tool 5 moves forward as the mud guide surface 9 in which the trailing edge side of the excavating blade 8 is inclined inward toward the leading edge side of the sub side cover 6, and the mud on the uncultivated land side is excavated. 8 and the excavated mud Is easily guided to the inside of the cover 6,
Tillage claws 1,1. . When the soil is finely crushed to a predetermined size, the mud does not escape to the outside.

[Brief description of the drawings]

FIG. 1 is a right side view of a rotary tiller for explaining a main part.

FIG. 2 is a rear view of FIG.

FIG. 3 is a left side view of the entire rotary tiller.

FIG. 4 is an overall perspective view in which a leveler is attached to the rear cover part of FIG. 3;

FIG. 5 is a first alternative embodiment of a main part.

FIG. 6 shows a second modification of the main part.

FIG. 7 is a plan view when the main part of FIG. 5 or FIG. 6 is attached.

FIG. 8 is a plan view of a rear cover portion.

FIG. 9 is a left side view when another example of the leveling leveler is mounted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tilling claw 2 Tilling pipe 3 Main cover 4 Side cover 5 Rotary tillage tool 6 Sub side cover 7 Residual tillage processing claw 8 Drilling blade 9 Mud guide surface

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshio Taketomo 660-3, Takubo, Shigenobu-cho, Onsen-gun, Ehime Pref. No. 3 Inside the Shigenobu Division of the Yamamoto Factory

Claims (1)

[Claims] 1. A plurality of tillage claws 1, 1,. . . The upper part of the tilling pipe 2 to which is attached is covered with the main cover 3, the side is covered with the side cover 4, and a sub-side cover 6 which protrudes downward is attached to the lower rear part of the side cover 4. A rotary tilling tool 5 provided with a residual tillage processing claw 7 in a lower front part, wherein a digging blade 8 provided at a front edge of the residual tillage processing claw 7 is positioned outside the sub side cover 6 in the width direction, The lower end of the excavating blade 8 extends while retracting to the vicinity of the rotation locus of the tilling claw 1, and the mud guide surface 9 protruding from the rear edge of the residual cultivation processing claw 7 is directed toward the inside of the sub side cover 6. A residual tillage treatment device for a rotary tiller.